require_relative "test_helper"
require "maptool/plugins"
require "tmpdir"
require "fileutils"

class PluginsTest < Minitest::Test
  def setup
    @dir = Dir.mktmpdir("maptool-plugins-test")
    @plugin_dir = File.join(@dir, "hello")
    FileUtils.mkdir_p(@plugin_dir)
    File.write(File.join(@plugin_dir, "plugin.json"), JSON.generate(label: "Hello", command: "./run.sh"))
    File.write(File.join(@plugin_dir, "run.sh"), "#!/bin/sh\necho '{\"type\":\"FeatureCollection\",\"features\":[]}'\n")
    File.chmod(0o755, File.join(@plugin_dir, "run.sh"))
  end

  def teardown
    FileUtils.remove_entry(@dir)
  end

  def test_list_finds_plugins_by_their_manifest
    assert_equal [{ "name" => "hello", "label" => "Hello" }], Maptool::Plugins.list(@dir)
  end

  def test_list_is_empty_for_a_directory_with_no_plugins
    assert_empty Maptool::Plugins.list(Dir.mktmpdir)
  end

  def test_run_returns_the_plugins_geojson_output
    result = Maptool::Plugins.run(@dir, "hello", [1, 2, 3, 4])
    assert_equal({ "type" => "FeatureCollection", "features" => [] }, result)
  end

  def test_run_raises_for_an_unknown_plugin
    assert_raises(Maptool::Plugins::RunError) { Maptool::Plugins.run(@dir, "nope", [1, 2, 3, 4]) }
  end

  # A directory-name-shaped ".." would otherwise resolve one level above
  # dir via File.join — the same class of path-escape GpxStore guards
  # against for uploaded file paths.
  def test_run_rejects_a_path_traversal_attempt_as_the_name
    assert_raises(Maptool::Plugins::RunError) { Maptool::Plugins.run(@dir, "..", [1, 2, 3, 4]) }
  end

  def test_run_raises_when_the_script_exits_non_zero
    File.write(File.join(@plugin_dir, "run.sh"), "#!/bin/sh\nexit 1\n")
    File.chmod(0o755, File.join(@plugin_dir, "run.sh"))
    assert_raises(Maptool::Plugins::RunError) { Maptool::Plugins.run(@dir, "hello", [1, 2, 3, 4]) }
  end

  def test_run_raises_when_the_script_does_not_print_a_feature_collection
    File.write(File.join(@plugin_dir, "run.sh"), "#!/bin/sh\necho 'not json'\n")
    File.chmod(0o755, File.join(@plugin_dir, "run.sh"))
    assert_raises(Maptool::Plugins::RunError) { Maptool::Plugins.run(@dir, "hello", [1, 2, 3, 4]) }
  end

  # Multiple dirs (app.rb's PLUGINS_DIRS: the built-in plugins/ plus an
  # optional private one under data/plugins/) — list/run both accept an
  # array, not just the single-dir form the tests above exercise.

  def test_list_merges_plugins_across_several_dirs
    other_dir = Dir.mktmpdir("maptool-plugins-test-2")
    other_plugin_dir = File.join(other_dir, "private")
    FileUtils.mkdir_p(other_plugin_dir)
    File.write(File.join(other_plugin_dir, "plugin.json"), JSON.generate(label: "Private", command: "./run.sh"))

    plugins = Maptool::Plugins.list([@dir, other_dir])

    assert_equal [{ "name" => "hello", "label" => "Hello" }, { "name" => "private", "label" => "Private" }], plugins
  ensure
    FileUtils.remove_entry(other_dir)
  end

  def test_list_prefers_the_first_dir_when_the_same_name_exists_in_both
    other_dir = Dir.mktmpdir("maptool-plugins-test-2")
    FileUtils.mkdir_p(File.join(other_dir, "hello"))
    File.write(File.join(other_dir, "hello", "plugin.json"), JSON.generate(label: "Shadowed", command: "./run.sh"))

    plugins = Maptool::Plugins.list([@dir, other_dir])

    assert_equal [{ "name" => "hello", "label" => "Hello" }], plugins
  ensure
    FileUtils.remove_entry(other_dir)
  end

  def test_run_finds_a_plugin_in_a_later_dir_when_earlier_dirs_do_not_have_it
    result = Maptool::Plugins.run([Dir.mktmpdir, @dir], "hello", [1, 2, 3, 4])
    assert_equal({ "type" => "FeatureCollection", "features" => [] }, result)
  end
end